1.Identification and Characterization of the Causal Organism of Gummy Stem Blight in the Muskmelon (Cucumis melo L.).
In Young CHOI ; Jang Nam CHOI ; Dong Chil CHOI ; Praveen Kumar SHARMA ; Wang Hyu LEE
Mycobiology 2010;38(3):166-170
Gummy stem blight is a major foliar disease of muskmelon (Cucumis melo L.). In this study, morphological characteristics and rDNA internal transcribed spacer (ITS) sequences were analyzed to identify the causal organism of this disease. Morphological examination of the Jeonbuk isolate revealed that the percentage of monoseptal conidia ranged from 0% to 10%, and the average length x width of the conidia was 70 (+/- 0.96) x 32.0 (+/- 0.15) microm on potato dextrose agar. The BLAST analysis showed nucleotide gaps of 1/494, 2/492, and 1/478 with identities of 485/492 (98%), 492/494 (99%), 491/494 (99%), and 476/478 (99%). The similarity in sequence identity between the rDNA ITS region of the Jeonbuk isolate and other Didymella bryoniae from BLAST searches of GenBank was 100% and was 95.0% within the group. Nucleotide sequences of the rDNA ITS region from pure culture ranged from 98.2% to 99.8%. Phylogenetic analysis with related species of D. bryoniae revealed that D. bryoniae is a monophyletic group distinguishable from other Didymella spp., including Ascochyta pinodes, Mycosphaerella pinodes, M. zeae-maydis, D. pinodes, D. applanata, D. exigua, D. rabiei, D. lentis, D. fabae, and D. vitalbina. Phylogenetic analysis, based on rDNA ITS sequence, clearly distinguished D. bryoniae and Didymella spp. from the 10 other species studied. This study identified the Jeonbuk isolate to be D. bryoniae.
Agar
;
Base Sequence
;
Bryonia
;
Databases, Nucleic Acid
;
DNA, Ribosomal
;
Glucose
;
Solanum tuberosum
;
Spores, Fungal
2.Pendulum Test Using Video-Based Two Dimensional Motion Analysis Program.
Seung Han YANG ; Eun Seok CHOI ; No Kyoung PARK ; Min Ki KIM ; Jang Hyu CHOI
Journal of the Korean Academy of Rehabilitation Medicine 1997;21(5):942-949
The pendulum test, recognized as a reliable measure of spasticity, has been replaced in this study by a video-based two dimensional motion analysis system. Using twenty five patients with spasticity(21 males, 4 females; mean age 46.6 year-old) in their lower legs due to lesions affecting the central nervous system and twenty two persons without any evidence of hypertonia(all males; mean age 23.4 year-old), five parameters such as relaxation index(RI), amplitude ratio(AR), torque at maximal acceleration velocity, number of swing and swing time were obtained for the purpose of documenting the reliability of the video-based two dimensional motion analysis system for the evaluation of spasticity. The values of RI(P<0.05), AR(P<0.01), and swing time(P<0.05) in patients with spasticity were significantly lower than control, whereas the value of torque in patients was significantly higher than control(P<0.01). Spearman's correlation coefficients of the RI(r=+/-0.70894, P<0.001), AR(r=+/-0.71832, P<0.001), number of swing(r=+/-0.59037, P<0.05) and swing time(r=+/-0.59648, P<0.01) showed a statistically significant negative correlation with the modified Ashworth scale, whereas that of torque(r=0.59037, P<0.01) showed a significant positive correlation. In conclusion, a pendulum test using a video-based two dimensional motion analysis system is a simple, and a reliable method for the quantitative evaluation of spasticity.
Acceleration
;
Central Nervous System
;
Evaluation Studies as Topic
;
Female
;
Humans
;
Leg
;
Male
;
Muscle Spasticity
;
Relaxation
;
Torque
3.A Child with Familial Hypophosphatemic Ricket: A case report.
Eun Seok CHOI ; Sae Yoon KANG ; Yeon Soo LEE ; Jang Hyu CHOI
Journal of the Korean Academy of Rehabilitation Medicine 1997;21(3):623-
Familial hypophosphatemic ricket (Vitamin D-resistant ricket), first described by Albright in 1937, has been known to be transmitted as an X-linked dominant trait in most families. Children with this disease would show growth retardation with characteristic clinical features such as congenital alopecia, genu varum or genu valgum, coxa vara and waddling gait. Although the physical features associated with this disease have been documented frequently, the potential involvement of auditory pathway due to abnormal bone formation in skull has not been explored frequently. We report a twenty six-month-old female child with familial hypophosphatemic ricket who presented abnormal findings of brainstem auditory evoked potential study. The impaired hearing function should be alerted as one of possible accompanying disabilities of the disease.
Alopecia
;
Auditory Pathways
;
Child*
;
Coxa Vara
;
Evoked Potentials, Auditory, Brain Stem
;
Female
;
Gait
;
Genu Valgum
;
Genu Varum
;
Hearing
;
Humans
;
Osteogenesis
;
Rickets, Hypophosphatemic*
;
Skull
4.Isolation and Identification of Mushroom Pathogens from Agrocybe aegerita.
In Young CHOI ; Jang Nam CHOI ; Praveen K SHARMA ; Wang Hyu LEE
Mycobiology 2010;38(4):310-315
Agrocybe aegerita is an important mushroom cultivated in Korea, with good feel and a peculiar fragrance. A. aegerita can be cultivated throughout the year using culture bottles but is more susceptible to contamination than other mushrooms. Twenty-two pathogens were isolated from the fruiting bodies and compost of A. aegerita, and seven isolates were isolated from Pleurotus ostreatus to compare with the A. aegerita isolates, collected from Gimje, Iksan, Gunsan of Chonbuk, and Chilgok of Gyeongbuk Province in 2009. These isolates were identified based on morphological and molecular characteristics. Of the 29 isolates, 26 were identified as Trichoderma spp. and the remaining three were Aspergillus spp., Mucor spp., and Penicillium spp. A phylogenetic analysis revealed that the 26 isolates of Trichoderma were divided into four taxa, namely T. harzianum, T. pleuroticola, T. longibrachiatum, and T. atroviride. Among the Trichoderma spp., 16 isolates (55.2%) were identified as T. harzianum, six as T. pleuroticola (20.7%), two as T. longibrachiatum, and the remaining two were T. atroviride.
Agaricales
;
Agrocybe
;
Aspergillus
;
Fruit
;
Korea
;
Mucor
;
Penicillium
;
Pleurotus
;
Soil
;
Trichoderma
5.Elbow Reconstruction Using Island Flap for Burn Patients.
Gi Yeun HUR ; Woo Jin SONG ; Jong Wook LEE ; Hoon Bum LEE ; Sung Won JUNG ; Jang Hyu KOH ; Dong Kook SEO ; Jai Ku CHOI ; Young Chul JANG
Archives of Plastic Surgery 2012;39(6):649-654
BACKGROUND: Deep burns of the elbow lead to soft tissue necrosis and infection, with exposure of deep structures. Adequate wound coverage of this area requires thin, pliable, and durable tissue, while optimal functional recovery requires early coverage and functional rehabilitation. We have found 3 types of island flaps that provide reliable coverage for the elbow. METHODS: A retrospective study was performed on all patients who underwent flap coverage of an elbow defect at our hospital. The patients' data including age, sex, cause of injury, wound dimensions, timing of flap coverage, postoperative elbow motion, and complications were investigated. RESULTS: Between 2001 and 2012, 16 patients were treated at our hospital. The mean age was 53.3 years. Three kinds of flaps were performed: 9 latissimus dorsi flaps, 4 lateral arm flaps, and 4 radial forearm flaps. The average defect size was 183.5 cm2 (range, 28 to 670 cm2). Wound coverage was performed at mean duration of 45.9 days (range, 14 to 91 days). The mean postoperative active elbow flexion was 98degrees (range, 85degrees to 115degrees). Partial flap failure occurred in 1 latissimus dorsi flap. Minor complications included partial flap loss (11.8%), hematoma (23.5%), seroma (35.3%), and wound infection (5.9%). CONCLUSIONS: Flap selection for elbow reconstruction is determined by the defect size and the extent of the adjacent tissue injury. Elbow reconstruction using an island flap is a single-staged, reliable, and relatively simple procedure that permits initiation of early rehabilitation, thereby improving a patient's functional outcome.
Arm
;
Burns
;
Elbow
;
Forearm
;
Hematoma
;
Humans
;
Necrosis
;
Retrospective Studies
;
Seroma
;
Surgical Flaps
;
Wound Infection
6.Treatment of Talipes Equinus Deformity Using Free Radial Forearm Flap and Achilles Tendon Lengthening.
Dae Seung KIM ; Jong Wook LEE ; Jang Hyu KO ; Dong Kook SEO ; Jai Ku CHOI ; Young Chul JANG ; Suk Joon OH
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2007;34(5):593-598
PURPOSE: Talipes equinus deformity is defined as impossibility of heel weight-bearing and lacking of improvement of toe-tip gait despite sufficient duration of conservative treatment. The incidence of equinus deformity induces post-traumatic extensive soft tissue defect and subsequently increases it. Severe equinus deformities of the foot associated with extensive scarring of the leg and ankle were corrected using achilles Z-lengthening and free-tissue transfer. METHODS: Free radial forearm flap was done in nine cases of eight patients from January 2000 to November 2006. Causes of deformity were post-traumatic contracture (one patient) and post-burn scar contracture (seven patients). Seven patients were male, one patient was female. Mean age was 32.1 (range, 10-57). Flap donors were covered with artificial dermis (Terudermis(R)) and split thickness skin graft (five cases), and medium thickness skin graft only (four cases). RESULTS: The size of flaps varied from 6x12 to 15 x12cm (average, 12x7.8cm). Achilles tendon was lengthened 4.2cm on average. Free radial forearm flap was satisfactory in all cases. All patients could ambulate normally after the surgery. Cases having donor coverage with Terudermis(R) were aesthetically better than those having skin grafts only. CONCLUSION: This study suggested that severe equinus deformities associated with extensive scarring of the leg and ankle can be corrected effectively free radial forearm flap and Achilles tendon lengthening.
Achilles Tendon*
;
Ankle
;
Cicatrix
;
Clubfoot*
;
Congenital Abnormalities*
;
Contracture
;
Dermis
;
Equinus Deformity*
;
Female
;
Foot
;
Forearm*
;
Gait
;
Heel
;
Humans
;
Incidence
;
Leg
;
Male
;
Skin
;
Tissue Donors
;
Transplants
;
Weight-Bearing
7.The Reverse Posterior Interosseous Island Flap for the Reconstruction of Soft Tissue Defects in the Wrist Injured by Electrical Arc.
Jeong Seok SUH ; Jong Wook LEE ; Jang Hyu KO ; Dong Kook SEO ; Jai Koo CHOI ; Chul Hoon CHUNG ; Suk Joon OH ; Young Chul JANG
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2007;34(5):580-586
PURPOSE: High tension electrical injuries result in major tissue(eg. bones, tendons, vessels and nerves) destruction. Therefore, the management of mutilating wrist caused by electrical injuries still represents a challenge. There are various approaches to this problem including local and regional flaps as well as pedicled distant flaps and microsurgical free tissue transfer. Although it has not gained wide acceptance, because of the technically demanding dissection of the pedicle, posterior interosseous flap is now well accepted for the reconstruction of hand and wrist in hand surgery. The principal advantages of this flap are minimal donor site morbidity, minimal vascular compromise, one stage operation. This flap also offers the advantages of ideal color match and composition. In this report, we describe our experience with the reverse posterior interosseous island flap for reconstruction of mutilating wrist with main vessel injuries. METHODS: From October, 2004 to June, 2006, we treated 11 patients with soft tissue defects and main vessel injuries on the wrist that were covered with reverse posterior interosseous island flap. RESULTS: These 11 patients were all male. The ages ranged from 27 to 67 years(mean age 41.75) and the follow-up period varied from 4 to 19 months. Complete healing of the reverse posterior interosseous island flaps were observed in 11 patients(12 flaps). The majority of these flaps showed a certain degree of venous congestion, which in a flap was treated with medical leech. 1 flap has partial necrosis owing to sustained venous congestion, requiring secondary skin graft. flap size varied from 3.5x8cm to 10x12cm(mean size 6.4x8.9m). The donor site defect was closed directly in 5 flaps, and by skin graft in 7 flaps. CONCLUSION: We found that the reverse posterior interosseous island flap is reliable and very useful for reconstruction of mutilating wrist and we recommend it as first choice in coverage of soft tissue defects in the wrist with electrical arc injuries.
Follow-Up Studies
;
Hand
;
Humans
;
Hyperemia
;
Male
;
Necrosis
;
Skin
;
Surgical Flaps
;
Tendons
;
Tissue Donors
;
Transplants
;
Wrist*
8.Spontaneous Flexor Tendon Rupture of the Burned Hand.
Do Hyun KWON ; Jong Wook LEE ; Jang Hyu KOH ; Dong Kook SEO ; Jai Ku CHOI ; Young Chul JANG
Journal of Korean Burn Society 2010;13(1):48-51
PURPOSE: Spontaneous tendon rupture of finger is defined the rupture of tendon without any intrinsic or extrinsic pathological processes in finger. Spontaneous flexor tendon ruptures are rare. Burn affects not only skin but also muscle and tendon according to the depth. Particularly, burn in hand badly affects movement of finger. Thus, We report the case of spontaneous flexor tendon rupture of finger that happened after burn. METHODS: We studied a 42 year old male presented with third degree electrical burn at the palm of the right hand. And then, Terudermis(R) was applied on 23rd day after burn and split thickness skin graft was applied on 37th day after burn. After operation, there were no special symptoms for some period. But, on 74th day after burn, while providing physical therapy to finger, he could not flex his thumb of the hand with popping sound and edema. So we performed US and MRI scan, finally diagnosed complete tear on FPL tendon of the right hand which was in flexor tendon injury zone IV. We harvested donor from Palmaris longus and tendon graft was applied. RESULTS: After operation, graft was well taken without other problem. And after applying splint, 4th day after tendon graft, active finger extension was done with passive flexion achieved using a rubber band attached to the finger tip. 4 weeks after the operation, splint was removed and the patient gently started active exercise. CONCLUSION: Spontaneous rupture of flexor tendon is rare and moreover, there was no case report of rupture after burns so far. We are now reporting that we early diagnosed the spontaneous flexor tendon rupture of the burned hand and functionally corrected by tendon graft.
Burns
;
Edema
;
Fingers
;
Hand
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Muscles
;
Pathologic Processes
;
Rubber
;
Rupture
;
Rupture, Spontaneous
;
Skin
;
Splints
;
Tendon Injuries
;
Tendons
;
Thumb
;
Tissue Donors
;
Transplants
9.Cases of Chemical Burn by Aesthetic Phenol Peel.
Ka Ram KIM ; Jai Koo CHOI ; Jang Hyu KOH ; Dong Kook SEO ; Jong Wook LEE ; Young Chul JANG
Journal of Korean Burn Society 2010;13(1):45-47
PURPOSE: Recently there are upgrowing public interest of cosmetics and anti-aging and also public request of chemical peel and its complications. It is a strong chemical agent and can occur severe chemical burn. METHODS: This research surveyed from August 2008 to March 2010 by 3 patients who had gotten chemical burn by phenol peel. We investigated age, sex, site, size and treatment. RESULTS: The average age of cases was 43 years old. They were all female. Damaged area was all on face. Wound size was 3.3% in average. Wound depth was deep second degree in 2 cases and mid second degree in 1 case. In one case, ectropion on both lower eyelids was occurred by scar contracture. We did release and thick split thickness skin graft to resolve ectropion. To other milder cases, we managed conservatively. CONCLUSION: People who had gotten chemical burn by phenol therapy didn't get proper therapy instantly. We suggest that phenol peel must be performed very carefully and by professional and experienced surgeon.
Burns, Chemical
;
Cicatrix
;
Contracture
;
Cosmetics
;
Ectropion
;
Eyelids
;
Female
;
Humans
;
Phenol
;
Skin
;
Transplants
10.A Case of Venous Stasis Ulcer Treated by Subfascial Endoscopic Perforator Ligation and Split Thickness Skin Graft.
Seong Ho MOON ; Jong Wook LEE ; Jang Hyu KOH ; Dong Kook SEO ; Jai Koo CHOI ; Young Chul JANG
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2009;36(3):336-340
PURPOSE: The wound of a patient who has chronic venous insufficiency is easy to recur. Also they develop a complication even after the conservative therapy or skin graft. We have to diagnose the venous stasis ulcer correctly and remove the cause to improve the effectiveness of treatment. We operated endoscopic perforating vein ligation and splitt thickness skin graft on a patient with venous stasis ulceration on right leg. METHODS: A 26 year old male patient who had a scalding burn on his right leg in July 2005 checked into our hospital in March 2008. Even though he got three operations-the split thickness skin graft-at different clinics, the wound did not heal. The size of the wound was 12 by 8 cm2 and granulation with edema and fibrosis had been formed. We kept observation on many collateral vessels and perforating vein through venogram and doppler sonography and firmly get to know that the wound came with chronic venous insufficiency. After a debridement and an application of VAC(r) for two weeks, the condition of granulation got better. So we proceeded with the operation using subfascial endoscopic perforating surgery and split thickness skin graft. RESULTS: Through the venogram after the operation, we found out that the collateral vessels had been reduced compared to the previous condition and the widened perforating vein disappeared. During a follow up of 6 months, the patient did not develop recurrent stasis ulcer and postoperative complications. CONCLUSION: Subfascial endoscopic perforator ligation is a relatively simple technique with a low complication rate and recurrence rate. Split thickness skin graft with subfascial endoscopic perforator surgery can be a valuable method for treating severe venous stasis ulcers.
Burns
;
Debridement
;
Edema
;
Fibrosis
;
Follow-Up Studies
;
Humans
;
Leg
;
Ligation
;
Male
;
Porphyrins
;
Postoperative Complications
;
Recurrence
;
Skin
;
Transplants
;
Varicose Ulcer
;
Veins
;
Venous Insufficiency